686816603833248 has 144 divisors (see below), whose sum is σ = 2330270620292160. Its totient is φ = 196233315368832.

The previous prime is 686816603833189. The next prime is 686816603833363. The reversal of 686816603833248 is 842338306618686.

686816603833248 is a `hidden beast` number, since 6 + 8 + 6 + 8 + 1 + 6 + 603 + 8 + 3 + 3 + 2 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8111453836 + ... + 8111538507.

It is an arithmetic number, because the mean of its divisors is an integer number (16182434863140).

Almost surely, 2^{686816603833248} is an apocalyptic number.

It is an amenable number.

686816603833248 is an abundant number, since it is smaller than the sum of its proper divisors (1643454016458912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686816603833248 is a wasteful number, since it uses less digits than its factorization.

686816603833248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16222992376 (or 16222992355 counting only the distinct ones).

The product of its (nonzero) digits is 1146617856, while the sum is 72.

The spelling of 686816603833248 in words is "six hundred eighty-six trillion, eight hundred sixteen billion, six hundred three million, eight hundred thirty-three thousand, two hundred forty-eight".